ATMEGA8L ATMEL [ATMEL Corporation], ATMEGA8L Datasheet - Page 200

• Manufacturer Part Number: ATMEGA8L
• Description: 8-bit AVR with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

ADC Accuracy Definitions
200
ATmega8(L)
Figure 96. ADC Power Connections
An n-bit single-ended ADC converts a voltage linearly between GND and V
steps (LSBs). The lowest code is read as 0, and the highest code is read as 2
Several parameters describe the deviation from the ideal behavior:
•
Figure 97. Offset Error
Offset: The deviation of the first transition (0x000 to 0x001) compared to the ideal
transition (at 0.5 LSB). Ideal value: 0 LSB.
Output Code
Offset
Error
V
REF
PC1 (ADC1)
PC0 (ADC0)
ADC7
GND
AREF
ADC6
AVCC
PB5
Input Voltage
Ideal ADC
Actual ADC
2486M–AVR–12/03
n
-1.
REF
in 2
n